复杂地质条件挂帮矿开采三维可视化设计技术

Technology of 3D Visual Design for Hanging-Wall Ore Mining under Complex Geological Condition

露天境界挂帮矿赋存条件复杂多变,存在着大量不规则台阶、滑坡和断层等复杂地质地形,以MICROMINE软件为平台,通过引入特殊地形约束线,构建约束性DTM模型,解决了一般DTM模型无法精确模拟复杂地质体的问题;运用线框构模法,直观地揭露矿体、露天边坡以及滑坡之间的空间位置关系,以此来指导挂帮矿开采的开拓采准设计,实现地下开采设计的三维可视化,以及开拓采准设计的优化。大冶铁矿挂帮矿开采的应用实践表明,挂帮矿赋存地质条件得到了精确模拟,设计效率及合理性大为提高,为类似露天矿挂帮矿开采提供了参考。

The occurrence condition of hanging - wall ore on open pit boundary is always complicated and variable, which is accompanied with complex geology and landform including irregular benches, landslides and faults and so on. In order to solve the problem that general digital terrain model （DTM） can＇t simulate complex geological mass accurately, by introducing special constrained topographical lines based on the platform of MICROMINE, a constrained DTM of open pit was built. With the method of wire frame modeling, the spatial relationship among ore, open pit slope and landslide was expressed visually. Those models can be used to guide the design of development and mining preparation for hangingwall ore mining,the 3D visualization of underground mining design and the optimization of the development and mining preparation design. This technology was applied to the hanging -wall ore mining in Daye iron min, as a result, the occurrence condition of hanging - wall ore was simulated accurately, and the efficiency and rationality of the hanging - wall ore mining design were advanced greatly. It provided a reference for hangingwall ore mining in similar open pit mines.